package puyu.manage.service.security;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import puyu.manage.service.constant.HttpStatus;
import puyu.manage.service.utils.MessageUtils;
import puyu.manage.service.utils.except.CustomException;

import java.util.Map;
import java.util.Objects;

/**
 * 安全服务工具类
 *
 * @author cxnet
 */
public class SecurityUtils {
    /**
     * 获取用户账户
     **/
    public static String getUsername() {
        try {
            return getLoginUser().getUsername();
        } catch (Exception e) {
            throw new CustomException(MessageUtils.message("A1101"), HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户id
     */
    public static String getUserId() {
        try {
            return getLoginUser().getUser().get("userid")+"";
        } catch (Exception e) {
            throw new CustomException(MessageUtils.message("A1102"), HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户
     **/
    public static LoginUser getLoginUser() {
        try {
            return  (LoginUser) getAuthentication().getPrincipal();
        } catch (Exception e) {
            throw new CustomException(MessageUtils.message("B01000"), HttpStatus.UNAUTHORIZED);
        }
    }


    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 判断用户是否登录
     *
     * @return
     */
    public static boolean isLogin() {
        if (Objects.isNull(SecurityContextHolder.getContext())) {
            return false;
        }

        if (Objects.isNull(SecurityContextHolder.getContext().getAuthentication())) {
            return false;
        }

        return !SecurityContextHolder.getContext().getAuthentication().getName().
                equals("anonymousUser");
    }
}
